[Traditional nutrition and demography in the Arctic zone of Western Siberia].

High requirements for macro- and micronutrients of the organism of a pregnant woman living in the Far North are associated with the influence of extreme factors of high latitudes, and the needs of the mother and the growing fetus. Only the products of the unique food culture of the Arctic people - the Nenets, make it possible to meet the emerging needs. of the work was to study the impact of traditional nutrition on the reproductive health of Nenets women living in the Arctic zone of Western Siberia.

Iodine Status of Women and Infants in Russia: A Systematic Review.

This systematic review presents a critical synthesis of the available information on the iodine status among women and infants in Russia. Literature search was performed in accordance with PRISMA guidelines using PubMed, Scopus Web of Science databases as well as eLIBRARY-the Russian national source. Altogether, 277 papers were identified and 19 of them were eligible for the review.

Analysis of the functional group composition of the spruce and birch phloem lignin.

In this article, the functional group composition of the spruce (Pícea ábies) and birch (Bétula péndula) phloem lignin is described. The features of the chemical structure were studied by analyzing dioxane lignin using the elemental analysis, UV-Vis, FT-IR, and 1D NMR spectroscopy. For comparison, samples of xylem dioxane lignin isolated from the corresponding wood species were also analyzed.

Job Stress and Working Capacity among Fly-In-Fly-Out Workers in the Oil and Gas Extraction Industries in the Arctic.

(1) Background: the research purpose is to identify and describe the stress and working capacity dynamics of oil and gas fly-in-fly-out (FIFO) workers in the Arctic during the fly-in period using biochemical, psychophysiological and psychological methods with further analysis of the relationship between them using objective, subjective and projective indicators. (2) Methods: The research involved 70 oil and gas FIFO specialists in the Arctic. The study of stress and working capacity was carried out using biochemical (saliva analysis for cortisol), psychophysiological (complex visual-motor reaction and variational cardiointervalometry) and psychological (questionnaire "Well-being.

Comprehensive analysis of the chemical structure of lignin from raspberry stalks (Rubus idaeus L.).

Lignins of non-woody fast-growing plants cause high interest in recent time as a potential source of raw materials for biorefining. Studying of the lignin structure in shrubs will allow obtaining the information about processes of biosynthesis of these plants and developing methods of their delignification for bioprocessing industry. We studied the structure of raspberry dioxane lignin (Rubus idaeus L.

Scattering of Ultrashort X-ray Pulses by Various Nanosystems.

Currently, the study of the scattering of ultrashort X-ray pulses (USPs) by various objects is an urgent task, in connection with the creation of powerful sources of USP generation. In this paper, the theory of the scattering of attosecond pulses by polyatomic structures is developed taking into account the magnetic component of USPs. It is shown that the scattering spectra depend not only on the structure of the target, but also on other characteristics of USPs.

Structural characterization of the lignin from Saxifraga (Saxifraga oppositifolia L.) stems.

As a renewable source of unique aromatic compounds, lignin attracts the attention of many researchers. However, for its successful application, it is necessary to have a clear and accurate idea of its chemical structure. Therefore, it is necessary to expand knowledge about the structure of lignins of various nature using the informative analytical methods.

Iodine and bromine in fish consumed by indigenous peoples of the Russian Arctic.

Fish muscle may constitute one of the main sources of iodine (I) for the indigenous peoples of the Russian Arctic, although limited information is available about its content in commonly consumed fish species. In the current study, bromine (Br), I, the essential elements (copper, selenium and zinc) and other non-essential elements - specifically mercury, arsenic (As), cadmium, lead and nickel - have been quantified in 10 fish species consumed by people living in the Nenets and Chukotka Regions. Fish muscle was analysed by ICP-MS after nitric acid or tetramethylammonium hydroxide digestion.

North Pacific Baleen Whales as a Potential Source of Persistent Organic Pollutants (POPs) in the Diet of the Indigenous Peoples of the Eastern Arctic Coasts.

Among marine mammals, gray and bowhead whales contain large amounts of fat and thereby constitute crucial dietary components of the traditional diet of indigenous peoples of the Eastern Arctic. Despite the high nutritional and cultural value of gray and bowhead whales, there is a risk of persistent organic pollutant (POP) intake by indigenous individuals who use marine mammals as their main source of fat. POPs are lipophilic pollutants and are known to accumulate and magnify along the marine food web.

In vitro adsorption-desorption of aflatoxin B1 on Pepper's lignins isolated from grassy plants.

The aflatoxin B1 (AFB1) adsorption properties of several lignins isolated by the Pepper's method from grassy plants: Helianthus tuberosus (LS-1), Atriplex patula (LS-2), Rhododendron tomentosum (LS-3), Althaea officinalis (LS-4), Lavatera (LS-5), and from wood of spruce Pícea (LS-6) were studied. The adsorption was conducted in vitro in the modeled conditions of the gastrointestinal tract. The correlations between the values of adsorption-desorption and the parameters of surface-porous structure and chemical structure of the lignins were established.

Concentration dataset for 4 essential and 5 non-essential elements in fish collected in Arctic and sub-Arctic territories of the Nenets Autonomous and Arkhangelsk regions of Russia.

The raw concentration data for the research article entitled "Essential and non-essential trace elements in fish consumed by indigenous peoples of the European Russian Arctic" (Sobolev et al., 2019) [1] are herein presented. Fifteen fish species were collected in the Nenets Autonomous and Arkhangelsk Regions of the Russian Federation and were analysed for 9 elements (As, Cd, Co, Cu, Hg, Ni, Pb, Se and Zn).

Creation of Superhydrophobic Coatings Based on MWCNTs Xerogel.

The creation of hydrophobic anti-icing and self-cleaning coatings is a relevant task for many industrial sectors. The potential field of application includes production of liquid and gas separators and filters, the field of textiles and clothing, construction and new materials, optical and microelectronic devices, the field of automobile construction and maritime shipping as well as energy and agriculture. The article suggests a new approach to the creation of superhydrophobic anti-icing coatings, by drawing peeled multi-walled carbon nanotubes (MWCNTs) to the sample surface.

Marine litter pollution on the Northern Island of the Novaya Zemlya archipelago.

This study focused on the identification and classification of marine litter on four different shores of the uninhabited Northern Island of the Novaya Zemlya archipelago (Russian Federation). Using the methodology of the Marine Strategy Framework Directive (MSFD), beach sections of 100 m in length were selected and marine litter items larger than 2.5 cm were collected and classified into nine material categories.

Self-Identity Development among Indigenous Adolescents from the Far North of Russia.

Self-identity is one of the fundamental needs of an individual. The most significant period of a person's self-identity development is adolescence. The aim of this empirical study was to examine self-identity development among indigenous adolescents from the subarctic region of Russia.

The readily-releasable pool dynamically regulates multivesicular release.

The number of neurotransmitter-filled vesicles released into the synaptic cleft with each action potential dictates the reliability of synaptic transmission. Variability of this fundamental property provides diversity of synaptic function across brain regions, but the source of this variability is unclear. The prevailing view is that release of a single (univesicular release, UVR) or multiple vesicles (multivesicular release, MVR) reflects variability in vesicle release probability, a notion that is well-supported by the calcium-dependence of release mode.

Essential and non-essential trace elements in fish consumed by indigenous peoples of the European Russian Arctic.

In present study, the analyses of essential [copper (Cu), cobalt (Co), selenium (Se) and zinc (Zn)] and non-essential elements [mercury (Hg), lead (Pb), cadmium (Cd) and arsenic (As)] in 7 fish species consumed by the indigenous people of the European Russia Arctic were conducted. The Nenets Autonomous Region, which is located in the north-eastern part of European Russia, was chosen as a Region of interest. Within it, the Nenets indigenous group (n = 6000) constitutes approximately 10% of the total population.

Combustion of hydrolysis lignin in a drop tube furnace and subsequent gaseous and particulate emissions.

The aim of the study was to analyze the combustion of hydrolysis lignin in industrial plants which use pulverized combustible and which are characterized by very high heating rates (up to 10 K/min). Pulverized samples of hydrolysis lignin and of spruce bark or spruce trunk for comparison were injected in a drop tube furnace under an oxidative flow (synthetic air) and under an isothermal temperature (between 800 and 1200 °C) in the reaction zone. The gaseous and particulate emissions were analyzed.

Gender Identity Development among Teenagers Living in the Subarctic Region of Russia.

Gender identity is an important element of an individual's identity and is one of the regulators of human behavior while acquiring social roles. The aim of this empirical research is to study gender identity development among teenagers living in the subarctic territories of Russia. The results show the correlation between types of gender identity among male and female teenagers, the dynamic in the correlation between gender identity types during adolescence and the characteristics of each type of gender identity in adolescence from the point of view of psychological properties.

Analysis of Psychological Risks in the Professional Activities of Oil and Gas Workers in the Far North of the Russian Federation.

The professional activity in shifts in the Arctic contributes to the development of unfavorable functional status and destructive personal qualities of workers, which leads to a decrease in the level of mental health and efficiency of labor activity. The reference to the risk-oriented approach is conditioned by the need to predict the professional efficiency of shift personnel. The purpose of this study is to determine the psychological risks of oil and gas workers with a shift work organization in the Arctic.

Quantum entanglement of a harmonic oscillator with an electromagnetic field.

At present, there are many methods for obtaining quantum entanglement of particles with an electromagnetic field. Most methods have a low probability of quantum entanglement and not an exact theoretical apparatus based on an approximate solution of the Schrodinger equation. There is a need for new methods for obtaining quantum-entangled particles and mathematically accurate studies of such methods.

[Studies of the dc-potential of the brain level distribution in elderly women with high anxiety.].

The article presents the results of studies of the direct current (DC) potential of the brain level distribution in elderly women with high anxiety. Analysis of the DC-potential of the brain level distribution was held by mapping obtained by measuring the monopolar values of the DC-potential of the brain and calculating deviations in each of the leads from the average records which were registrated in all areas of the head. The results of the study indicate an increase in the background level of the DC-potential in most parts of the brain and the peculiarity of its distribution in elderly women with a high level of anxiety.

[Cognitive and affective disorders in the elderly].

To develop algorithm of diagnostics of cognitive and affective disorders in elderly and senile age 98 representatives of this age group were examined (1st group - 68 persons 60-74 years, 2nd group - 30 patients older than 75 years). For the diagnosis of cognitive disorders the developed and adapted «Short rating scale of cognitive functions», to diagnose emotional disorders - «Нospital scale of anxiety and depression HADS» were used. Cognitive impairment was revealed in 39,8% of the elderly (1st group - 28,7% in 2nd group - 61,6%).

Thermal degradations of wood biofuels, coals and hydrolysis lignin from the Russian Federation: Experiments and modeling.

The thermal degradation of wood biofuels (spruce, pine), of coals from different fields of the Russian Federation and of hydrolysis lignin is investigated using a thermogravimetric analyzer under different heating conditions and under non-oxidative or oxidative atmospheres. The samples are indeed submitted to a linear temperature ramp of 10K/min or to a temperature ramp of 200K/min up to a residence temperature between 250 and 450°C where they are maintained during 4h (isothermal conditions). The values of the kinetic parameters are determined for these different samples in both thermal conditions, either using the differential isoconversional method or by means of an Extended Independent Parallel Reaction (EIPR) model.